code: def enqueue(self, uri, **data):
      b64str = self.data_to_b64(**data)
      d = {"key": uri, "value": {"uri": uri, "data": b64str}}
      self.__enqueue_data(d)
  
file_path: BigDL/python/serving/src/bigdl/serving/kafka/client.py
imports: from kafka import KafkaProducer, KafkaConsumer
  from kafka.errors import kafka_errors
  import json
  from bigdl.serving.schema import *
  from bigdl.serving.log4Error import invalidInputError
label_desc: Use image node_id 2 for calling the InputQueue obj's underlying member method code with example usage: obj.enqueue(uri) without return types